Manufacturing Industry
STEM method enables view of atoms with crystal molecules.(EMERGING TECHNOLOGY)
Advanced Materials & Processes, September, 2006
A technique to get a closer-than-ever look at individual atoms within crystal molecules has reportedly been developed by Cornell University, Ithaca, N.Y. The technique, called annular dark imaging, allows scientist to see the polarity, or physical alignment, of constituent atoms and to get a view of the smaller atoms.
With the new technique, researchers can better predict the physical properties of a crystal at every point. The team used a scanning transmission electron microscope (STEM) at IBM on samples of aluminum nitride, gallium nitride, and other crystals with particular significance in nanotechnology research, in a chamber padded and shielded to reduce potentially atom-jiggling acoustic noise and electromagnetic radiation. Fitting the STEM with an...
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